Update examples

examples/FM6126Panel/FM6126Panel.ino

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+// How to use this library with a FM6126 panel, thanks goes to:
+// https://github.com/hzeller/rpi-rgb-led-matrix/issues/746
+
+#include <Arduino.h>
+#include <ESP32-RGB64x32MatrixPanel-I2S-DMA.h>
+
+RGB64x32MatrixPanel_I2S_DMA matrix;
+
+////////////////////////////////////////////////////////////////////
+// Reset Panel
+// This needs to be near the top of the code
+//
+// Change these to whatever suits
+// recommended settings and patches are by
+//
+// pinout for ESP38 38pin module
+// http://arduinoinfo.mywikis.net/wiki/Esp32#KS0413_keyestudio_ESP32_Core_Board
+//
+
+// R1 | G1
+// B1 | GND
+// R2 | G2
+// B2 | E
+// A | B
+// C | D
+// CLK| LAT
+// OE | GND
+
+#define R1 25
+#define G1 26
+#define BL1 27
+#define R2 5 // 21 SDA
+#define G2 19 // 22 SDL
+#define BL2 23
+#define CH_A 12
+#define CH_B 16
+#define CH_C 17
+#define CH_D 18
+#define CH_E -1 // assign to pin if using two panels
+#define CLK 15
+#define LAT 32
+#define OE 33
+
+void resetPanel()
+{
+int MaxLed = 64;
+
+int C12[16] = {0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1};
+int C13[16] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0};
+
+pinMode(R1, OUTPUT);
+pinMode(G1, OUTPUT);
+pinMode(BL1, OUTPUT);
+pinMode(R2, OUTPUT);
+pinMode(G2, OUTPUT);
+pinMode(BL2, OUTPUT);
+pinMode(CH_A, OUTPUT);
+pinMode(CH_B, OUTPUT);
+pinMode(CH_C, OUTPUT);
+pinMode(CH_D, OUTPUT);
+pinMode(CH_E, OUTPUT);
+pinMode(CLK, OUTPUT);
+pinMode(LAT, OUTPUT);
+pinMode(OE, OUTPUT);
+
+// Send Data to control register 11
+digitalWrite(OE, HIGH); // Display reset
+digitalWrite(LAT, LOW);
+digitalWrite(CLK, LOW);
+for (int l = 0; l < MaxLed; l++)
+{
+int y = l % 16;
+digitalWrite(R1, LOW);
+digitalWrite(G1, LOW);
+digitalWrite(BL1, LOW);
+digitalWrite(R2, LOW);
+digitalWrite(G2, LOW);
+digitalWrite(BL2, LOW);
+if (C12[y] == 1)
+{
+digitalWrite(R1, HIGH);
+digitalWrite(G1, HIGH);
+digitalWrite(BL1, HIGH);
+digitalWrite(R2, HIGH);
+digitalWrite(G2, HIGH);
+digitalWrite(BL2, HIGH);
+}
+if (l > MaxLed - 12)
+{
+digitalWrite(LAT, HIGH);
+}
+else
+{
+digitalWrite(LAT, LOW);
+}
+digitalWrite(CLK, HIGH);
+digitalWrite(CLK, LOW);
+}
+digitalWrite(LAT, LOW);
+digitalWrite(CLK, LOW);
+// Send Data to control register 12
+for (int l = 0; l < MaxLed; l++)
+{
+int y = l % 16;
+digitalWrite(R1, LOW);
+digitalWrite(G1, LOW);
+digitalWrite(BL1, LOW);
+digitalWrite(R2, LOW);
+digitalWrite(G2, LOW);
+digitalWrite(BL2, LOW);
+if (C13[y] == 1)
+{
+digitalWrite(R1, HIGH);
+digitalWrite(G1, HIGH);
+digitalWrite(BL1, HIGH);
+digitalWrite(R2, HIGH);
+digitalWrite(G2, HIGH);
+digitalWrite(BL2, HIGH);
+}
+if (l > MaxLed - 13)
+{
+digitalWrite(LAT, HIGH);
+}
+else
+{
+digitalWrite(LAT, LOW);
+}
+digitalWrite(CLK, HIGH);
+digitalWrite(CLK, LOW);
+}
+digitalWrite(LAT, LOW);
+digitalWrite(CLK, LOW);
+}
+// End of default setup for RGB Matrix 64x32 panel
+///////////////////////////////////////////////////////////////
+
+void setup(){
+
+resetPanel(); // do this before matrix.begin
+
+// If you experience ghosting, you will need to reduce the brightness level, not all RGB Matrix
+// Panels are the same - some seem to display ghosting artefacts at lower brightness levels.
+// In the setup() function do something like:
+
+matrix.setPanelBrightness(10); // SETS THE BRIGHTNESS HERE. 60 OR LOWER IDEAL.
+
+matrix.begin(R1, G1, BL1, R2, G2, BL2, CH_A, CH_B, CH_C, CH_D, CH_E, LAT, OE, CLK); // setup the LED matrix
+matrix.setTextColor(matrix.Color(96, 0, 96)); // r,g,b
+matrix.setCursor(1, 15);
+matrix.println("Hello World");
+
+}
+
+void loop(){
+
+}

examples/FM6126Panel/README.md

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+## FM6126 based LED Matrix Panel Reset ##
+
+FM6216 panels require a special reset sequence before they can be used, check your panel chipset if you have issuees. Refer to this example.